1
package org.apache.lucene.util.encoding;
3
import java.io.IOException;
4
import java.io.InputStream;
7
* Licensed to the Apache Software Foundation (ASF) under one or more
8
* contributor license agreements. See the NOTICE file distributed with
9
* this work for additional information regarding copyright ownership.
10
* The ASF licenses this file to You under the Apache License, Version 2.0
11
* (the "License"); you may not use this file except in compliance with
12
* the License. You may obtain a copy of the License at
14
* http://www.apache.org/licenses/LICENSE-2.0
16
* Unless required by applicable law or agreed to in writing, software
17
* distributed under the License is distributed on an "AS IS" BASIS,
18
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
19
* See the License for the specific language governing permissions and
20
* limitations under the License.
24
* An {@link IntDecoder} which wraps another {@link IntDecoder} and reverts the
25
* d-gap that was encoded by {@link DGapIntEncoder}. The wrapped decoder
26
* performs the actual decoding, while this class simply adds the decoded value
27
* to the previous value.
29
* @lucene.experimental
31
public class DGapIntDecoder extends IntDecoder {
33
private final IntDecoder decoder;
37
public DGapIntDecoder(IntDecoder decoder) {
38
this.decoder = decoder;
42
public long decode() throws IOException {
43
long decode = decoder.decode();
48
return prev += decode;
52
public void reInit(InputStream in) {
58
public String toString() {
59
return "DGap (" + decoder.toString() + ")";